During the Final Days of the Source, Zenos's sole purpose was to seek 'singular bliss' through mortal combat with his only 'friend', the Warrior of Light. The voidsent hated this but could not resist Zenos. Zenos's unusual strength allowed him to force a lopsided pact, taking of her power without offering anything in return, as well as further twisting the voidsent's appearance with excess Darkness. Thousands of years later, when the disgraced Garlean prince Zenos Galvus of the Source took up the discipline of the Reaper, he reached into the void and forged a pact with the voidsent, using her as his avatar.

The voidsent and Zenos, at the edge of the universe. As more and more voidsent came to reside in her domain, she became its de facto leader due to being the strongest voidsent among them, despite having no strong desire to rule. Other voidsent, usually weaker ones and those fleeing cruel masters, came to reside in the village as well. The voidsent Memoriate crafted a domain of her own, one resembling the ruins of a village. The excess Darkness transformed her more into a voidsent than Hyur, though she was strong enough to remain sentient and kept the power to use Memoria, leaving her as the sole surviving Memoriate. The Contramemoria eventually culminated with the Flood of Darkness, which consumed the Thirteenth and turned all who came in contact with it into voidsent. Having been born the way she did, she maintained a greater control over herself compared to other voidsent, whose astral nature rendered them aether-starved, causing them to perpetually hunger for aether. She often worked alone during the Contramemoria, and fought to protect innocents, though one defeat at the hands of villanous Memoriates left her desperate for help and cursing her lack of strength. She eventually learned how to wield her power as a Memoriate, able to seal Eidolons away in crystals known as Memoria. Due to her voidsent side, she stopped ageing when she was a young adult.

While still being carried in her mother's womb, her mother came in contact with the Darkness that was consuming the world, with the unborn child being influenced by it, being born half- Hyur, half-voidsent. 'Zero' was born in the Thirteenth during a war that came to be known as the Contramemoria.

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